Hallettsville, Texas · field elev 278 ft
Density Altitude at Hallettsville Municipal (34R)
Hallettsville Municipal sits at 278 ft, and even a typical August afternoon (98 °F) only lifts density altitude to about 2,781 ft — heat still trims performance, but the field rarely turns high-and-hot.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 55.3 | 117 ft | 65.9 | 811 ft |
| February | 59.0 | 361 ft | 69.4 | 1,036 ft |
| March | 65.2 | 766 ft | 75.6 | 1,431 ft |
| April | 71.4 | 1,164 ft | 81.8 | 1,820 ft |
| May | 78.4 | 1,607 ft | 88.2 | 2,216 ft |
| June | 83.6 | 1,932 ft | 93.5 | 2,539 ft |
| July | 85.8 | 2,068 ft | 96.2 | 2,703 ft |
| August | 86.3 | 2,099 ft | 97.5 | 2,781 ft |
| September | 81.7 | 1,814 ft | 92.4 | 2,473 ft |
| October | 73.6 | 1,304 ft | 85.1 | 2,025 ft |
| November | 63.6 | 662 ft | 74.6 | 1,368 ft |
| December | 56.6 | 203 ft | 67.1 | 889 ft |
▲ above 5,000 ft · ⚠ above 8,000 ft. These are planning references at standard pressure and dry air — afternoon humidity and low pressure both push the real number higher. Run today's values below.
Run today’s numbers for 34R
DENSITY ALTITUDE
Field elevation 278 ft — the air behaves like 2,811 ft.
- PRESSURE ALT
- 279 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
- —
- AIR DENSITY
- —
- WATER · GRAINS/LB
- —
For training and reference · verify with official sources and your POH before flight · no tool on this site renders a go / no-go judgment
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Frequently asked questions
How high does density altitude get at 34R in summer?
On a typical August afternoon — around 98 °F at the nearest NOAA normals station — density altitude at Hallettsville Municipal reaches roughly 2,781 ft at standard pressure. Hotter-than-normal days, low pressure, and humidity all push it higher, so run the day's actual numbers before flying.
What is the density altitude at 34R on an average day?
It swings with the seasons: from roughly 117 ft at the coldest month's average temperature to about 2,099 ft at the warmest month's — all from a constant field elevation of 278 ft. The month-by-month table above carries the full year.
What is the field elevation of Hallettsville Municipal?
278 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 34R (FAA), in Hallettsville, Texas.